Vice President: Mike Pence

Pence also took over leading the transition team after New Jersey Gov. Chris Christie was ousted from the role.

Pence was elected governor of Indiana in 2013 and before that served in the House of Representatives.

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Senior Adviser: Jared Kushner

Kushner, a New York real estate developer who is married to Mr. Trump's daughter Ivanka, was a key adviser during the campaign and remained influential after the election.

The president put him in charge of the new White House Office of American Innovation to overhaul government using ideas from the business world, and also asked Kushner to help broker a Mideast peace agreement.

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Assistant to the President: Ivanka Trump

Ivanka Trump took on an official, but unpaid, White House role in late March 2017.

President Trump's 35-year-old daughter contributed significantly to her father's campaign, transition, and now, his presidency. She already had an office in the White House, but taking on an official role meant she has to comply with ethics rules.

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Secretary of State: Mike Pompeo

Pompeo served as CIA director for the first year of the Trump administration, and in March 2018 the president chose him for secretary of state to replace Rex Tillerson. Pompeo was confirmed by the Senate on April 26.

Pompeo, previously a Republican congressman from Kansas, was a member of the House Intelligence Committee and a former Army captain.

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Attorney General: William Barr

William Barr was confirmed as attorney general by the Senate on February 14, 2019.

Barr served in the same position once before, from 1991 to 1993, during the first Bush administration.

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Secretary of Defense: Mark Esper

Mark Esper was confirmed on July 23, 2019, replacing replacing acting secretary Patrick Shanahan, who withdrew his name from consideration after reports of domestic violence incidents involving his family surfaced.

The Pentagon had been without a Senate-confirmed leader since December 2018, when former Defense Secretary James Mattis stepped down following President Trump's decision to withdraw troops from Syria.

Esper previously served as Secretary of the Army.

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Acting Chief of Staff: Mick Mulvaney

On December 14, 2018, Mr. Trump announced on Twitter that Mick Mulvaney would step in as acting chief of staff to replace the outgoing John Kelly.

Mulvaney has served as the White House budget director since February 2017. The former South Carolina congressman was elected to the House of Representatives as part of the tea party wave in 2010.

The Senate confirmed Mulvaney as budget director on Feb. 16.

He regularly votes against increasing the government's borrowing cap and presses for major cuts to benefit programs as a means to balance the budget.

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CIA Director: Gina Haspel

Haspel was confirmed as CIA director on March 17, 2018. She replaced Mike Pompeo after he left the post to become secretary of state.

The first woman to head the CIA, she was also first female CIA officer to serve as deputy director and before that served the agency overseas and in top management posts. Haspel once ran a secret CIA prison where terror suspects were waterboarded, and helped carry out an order that the CIA destroy its waterboarding videos.

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Treasury Secretary: Steven Mnuchin

Steven Mnuchin was confirmed as treasury secretary in February 2017 by a vote of 53-47.

Mnuchin served as the national finance chairman of the Trump campaign. He also spent 17 years working for Goldman Sachs.

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EPA Administrator: Andrew Wheeler

Andrew Wheeler, who was serving as deputy administrator of the EPA, assumed the role of acting EPA administrator after Scott Pruitt resigned on July 5, 2018.

Prior to his deputy nomination by President Donald Trump, Wheeler worked as a lobbyist with a client list that included Murray Energy, one of the nation's largest coal mining companies.

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Acting Secretary of Homeland Security: Kevin McAleenan

McAleenan was named Acting Secretary of the Department of Homeland Security in April 2019 following the departure of Kirstjen Nielsen.

He previously served as Customs and Border Patrol Commissioner and took over at DHS with orders from President Trump to clamp down on migrants crossing the the U.S.-Mexico border.

First Lady: Melania Trump

As first lady, she has focused on the issue of combating cyber-bullying, launching a campaign called "Be Best."

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White House National Economic Council: Larry Kudlow

Television pundit Larry Kudlow accepted President Trump's offer to head the White House National Economic Council on March 14, 2018.

The announcement came just days after Gary Cohn announced he was stepping down.

Kudlow, a regular on CNBC and other outlets, is an economic analyst who worked in the Office of Management and Budget during the Reagan administration.

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Housing and Urban Development Secretary: Ben Carson

Carson was confirmed by the Senate as the secretary of the Department of Housing and Urban Development (HUD) on March 2, 2017.

Carson was raised in an impoverished area of Detroit and later became a renowned neurosurgeon. He drew national attention when he ran in the Republican primary race, and later endorsed Mr. Trump.

The 65-year-old has no previous policy experience in the field of urban development, and has never held elected office.

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Agriculture Secretary: Sonny Perdue

Mr. Trump chose Perdue to lead the Agriculture Department in January 2017.

Perdue is a farmer's son who built businesses in grain trading and trucking before serving as the governor of Georgia from 2003 to 2011.

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Director of National Intelligence: Dan Coats

Coats was named to the role of director of national intelligence on Jan. 5, 2017. He announced plans to resign on July 28, 2019 after reports of rising tensions and policy differences with the president.

Coats was a U.S. senator from Indiana from 1989 to 1999, and again from 2011 to early 2017 when he retired.

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Energy Secretary: Rick Perry

Perry was confirmed by the Senate as energy secretary on March 2, 2017.

Perry served as governor of Texas from 2000 to 2015. He ran unsuccessfully for the White House in the 2012 and 2016 Republican primaries.

Perry has previously suggested that the Department of Energy should be abolished.

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Commerce Secretary: Wilbur Ross

Ross was confirmed by the Senate as commerce secretary on Feb. 27, 2017.

Ross is an investor and former banker, experienced in buying failing companies and reviving them. He is worth an estimated $2.9 billion.

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Transportation Secretary: Elaine Chao

Chao served as labor secretary under President George W. Bush from 2001 to 2009. She was the only Cabinet member to serve through his entire two terms in the White House, and the first Asian-American woman ever to hold a Cabinet-level position.

Chao is married to Senate Majority Leader Mitch McConnell.

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Education Secretary: Betsy DeVos

DeVos' nomination as education secretary was confirmed by the Senate on Feb. 7, 2017.

DeVos had become one of Trump's most controversial Cabinet picks, and she only garnered 50 lawmakers' votes. Vice President Mike Pence cast the tie-breaking vote.

The philanthropist and education activist, who has strongly supported charter schools and vouchers, served as chair of the Michigan Republican Party from 1996 to 2000.

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Veteran Affairs: Robert Wilkie

Robert L. Wilkie was confirmed as Veteran Affairs (VA) secretary on July 23, 2018. Wilkie, a former assistant secretary of defense under President George W. Bush, received bipartisan support in the Senate.

Wilkie replaced David Shulkin, who was fired amid ethics allegations and internal rebellion at the department over the role of private care for veterans.

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Ambassador to the UN: Kelly Craft

Kelly Craft was confirmed as the new ambassador to the United Nations on Aug. 1, 2019. She replaced Nikki Haley, who stepped down from the position at the end of 2018.

Craft, a longtime GOP activist from Kentucky, previously served as U.S. ambassador to Canada.

President Trump nominated Huntsman to serve as ambassador to Russia in March 2017.

Huntsman, 56, served as the U.S. ambassador to China under President Obama and as the U.S. ambassador to Singapore under Presidents George H.W. Bush and Bill Clinton. He also served as governor of Utah from 2005 until 2009, and he ran for president as a Republican in 2012.

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U.S. Ambassador to Israel: David Friedman

Mr. Trump selected New York bankruptcy attorney David Friedman to be the U.S. ambassador to Israel.

John Bolton

Bolton, a former ambassador to the United Nations, had held the job since March 2018, replacing General H.R. McMaster.

Bolton is known to be a hardliner on the Iran nuclear deal and on North Korea. He was Mr. Trump's third national security advisor in just over a year.

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Alexander Acosta

President Trump announced his selection of Alexander Acosta for labor secretary on Feb. 16, 2017, a day after the president's previous pick, Andrew Puzder, withdrew his name from consideration for the post.

Acosta resigned on July 12, 2019 amid controversy over his handling of a secret 2008 plea deal for accused sex offender Jeffrey Epstein when Acosta was U.S. Attorney in Florida.

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Patrick Shanahan

Shanahan withdrew from consideration for the permanent defense secretary position on June 18, 2019, the same day the Washington Post published a story about alleged incidents of domestic violence from 2010 and 2011.

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John Kelly

Kelly took over as White House chief of staff in the summer of 2017, replacing Reince Priebus. In early December 2018, President Trump announced that Kelly would be leaving by the end of the year.

Before that, Kelly, a retired Marine Corps General, had been serving as secretary of the Department of Homeland Security.

Sarah Huckabee Sanders

Huckabee Sanders was named as the press secretary on July 21, 2017, hours after Sean Spicer resigned from the post.

She had previously served as deputy White House press secretary and before that as a senior advisor for Trump's presidential campaign.

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Michael T. Flynn

Flynn was chosen on Nov. 18, 2016, for the role of national security adviser but resigned on Feb. 13, 2017, less than a month after President Trump took office.

Flynn came under fire for misleading Vice President Mike Pence about his talks with the Russian ambassador, including discussions of U.S. sanctions.

The former Army lieutenant general was a registered Democrat, but became a critic of President Obama and campaigned aggressively for Mr. Trump. He served as the director of the Defense Intelligence Agency from 2012 to 2014.

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Scott Pruitt

Pruitt was confirmed 52-46 as head of the Environmental Protection Agency, a federal agency he repeatedly sued to during the Obama administration, when he was Oklahoma's attorney general.

Pruitt came under fire from environmentalists due to his close ties with oil and gas companies and statements he's made casting doubt on climate change.

He resigned on July 5, 2018, following intense scrutiny for a series of questionable ethical decisions and his spending.

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David Shulkin

Shulkin was confirmed to lead the Department of Veterans Affairs on Feb. 13, 2017 by a unanimous vote in the Senate. He was fired by the president on March 28, 2018.

Shulkin previously served as the VA's undersecretary for health and spent more than two decades in hospital management.

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Gen. H.R. McMaster

U.S. Army Lieutenant General H.R. McMaster (L) was named national security adviser in February 2017 to replace Gen. Michael Flynn, who was ousted for withholding information from Vice President Mike Pence about his contacts with Russia.

On March 22, 2018, Trump announced that McMaster would be replaced by former Ambassador to the United Nations John Bolton.

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Bill Shine

Bill Shine, former co-president of Fox News and Fox Business Network, served as an assistant to the president and deputy chief of staff for communications from July 2018 until March 8, 2019.

A close ally of Roger Ailes, Shine was accused in lawsuits of helping Ailes cover up allegations of sexual harassment, although he was never directly linked to wrongdoing.

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Linda McMahon

McMahon was confirmed as head of the Small Business Administration on Feb. 14, 2017. On March 29, 2019 she announced she was leaving to take a role at a pro-Trump PAC.

McMahon and her husband, Vince, founded and built World Wrestling Entertainment (WWE).

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Gary Cohn

Cohn announced that he was resigning from his role as Director of the National Economic Council and chief economic advisor to President Trump on March 6, 2018.

Cohn had urged the president against imposing steep tariffs on steel and aluminum, which President Trump announced the week before.

He had been with the administration since the beginning. He was formerly the president and COO of Goldman Sachs.

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Rex Tillerson

Tillerson, the former CEO of ExxonMobil, served as secretary of state until March 13, 2018, when President Trump ousted him after months of reported tensions and public disputes.

Before his confirmation, some leading lawmakers voiced concern about Tillerson's business ties to Russia and his relationship with Russian President Vladimir Putin, who honored Tillerson with the Order of Friendship in 2013.

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Carl Icahn

Icahn was named to the role of special adviser on regulatory reform on Dec. 21, 2016 and left that role the following August.

The billionaire investor offered advice to Mr. Trump on economic regulations, but was not a federal employee and had no specific duties in the administration.

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Hope Hicks

Hicks was officially named White House communications director on Sept. 12, 2017, after filling that role in an interim basis since Anthony Scaramucci's departure in July.

She announced her resignation on Feb. 28, 2018, a day after testifying for nine hours before the House Intelligence Committee as part of its investigation into Russia's interference in the 2016 election.

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Omarosa Manigault

Manigault was named as an assistant to the president and director of communications for the Office of Public Liaison on Jan. 4, 2017.

In December 2017, the White House announced that Manigault "resigned ... to pursue other opportunities" and that her last day would be Jan. 20, 2018.

Manigault, a vocal Trump supporter during the campaign, gained fame as a contestant on season one of "The Apprentice."

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Tom Price

Price, a Republican representative from Georgia, was confirmed as health and human services secretary Feb. 10, 2017, by a Senate vote of 52-47.

He resigned on Sept. 29, 2017, amid scrutiny over his use of private planes at taxpayer expense and three days after Senate Republican leaders decided not to hold a vote on a bill to repeal Obamacare because they didn't have the votes to pass the bill.

Price, an orthopedic surgeon by trade, served five terms in Congress and was chairman of the House Budget Committee.

He has led the charge to repeal Obamacare, also known as the Affordable Care Act, saying it doesn't give patients or doctors adequate health care choices.

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Anthony Scaramucci

Scaramucci was named White House communications director on July 21, 2017. But on July 31, President Trump removed him from the position after Scaramucci's widely publicized rant criticizing other members of the president's team.

Prior to Scaramucci's appointment, Sean Spicer had been serving as both communications director and press secretary. Spicer resigned from the Trump administration on the same day Scaramucci was brought on.

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Steve Bannon

Mr. Trump announced Bannon's appointment to White House strategist on Nov. 13, 2016, setting off a firestorm of criticism. After a turbulent time in the White House, Bannon's tenure ended on Aug. 18, 2017.

Bannon headed the right-wing Breitbart News for almost five years before becoming CEO of the Trump campaign. Critics decried Bannon's role in encouraging the "alt-right" movement and white nationalist supporters.

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Reince Priebus

One of Mr. Trump's first personnel choices was to name Priebus as the White House chief of staff on Nov. 13, 2016. Priebus had served as the chairman of the Republican National Committee since 2011.

But after just six months in office, on July 28, 2017, Trump tweeted that he had named John Kelly to replace Priebus as White House chief of staff.

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Sean Spicer

Spicer was named as press secretary on Dec. 22, 2016. He resigned on July 21, 2017, shortly after President Trump selected Anthony Scaramucci as White House communications director.

Spicer had essentially been serving as both communications director and press secretary but had stepped back from press secretary duties in the weeks before his resignation.

Previously, Spicer served as communications director of the Republican National Committee since 2011.

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Mike Dubke

Dubke resigned from his role as White House communications director in May 2017.

Previously, Dubke served as a partner for the political advertising group Crossroads Media, which describes itself as "the premier Republican media services firm." Dubke also led the Virginia-based Black Rock Group, a strategic communications and public affairs firm.

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Katie Walsh

Walsh was named deputy chief of staff on Jan. 4, 2016, but she left her post in March to join an outside political organization supporting the Trump agenda.

Walsh was serving as the chief of staff for the Republican National Committee before joining the White House staff.

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Andy Puzder

The president-elect nominated Puzder as labor secretary on Dec. 8, 2017. but Puzder withdrew from consideration two months later.

Puzder, the CEO of CKE Restaurants, which owns fast food chains Carl's Jr. and Hardee's, came under fire for business practices including his company's racy advertising and his opposition to raising the minimum wage. He also admitted that he and his wife had employed an undocumented immigrant for housework, and faced negative headlines about his messy public divorce from three decades ago.